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FREE GRIB Files from GMN Marine Weather Services

GMN GRIB CoverageGlobal Marine Networks (GMN), the leader in marine weather services, now offers 7 day wind forecasts of the world as a free public service via its GRIB Mail Robot. These forecasts are generated daily at 0015, 0615, 1215, 1815 GMT for every region of the world. GRIB forecasts are based on the National Weather Service, NOAA, Wave Watch III model yielding highly accurate forecasts every 6 hours for up to 7 days into the future. All GRIB forecasts are available via download or delivered by e-mail and optimized specifically for low bandwidth wireless connections.

The GRIB files provided here are derived from the NOAA MMAB Operational Wave Model (wwave3) which is considered to be the best model available for computer generated ocean surface weather forecasts. The user assumes any and all risk associated with the use of these GRIB files.

You must have a way to view these GRIB files. We recommend GRIB Explorer for viewing GRIB files.

Please note: there is no free technical support provided for Free GRIB files.

BRAND NEW: XGate Satellite Data Service Now Offers FREE GRIB Weather Downloads and An Integrated GRIB Viewer At No Extra Cost

Now, with just a few clicks, XGate users can easily see weather forecast visualizations so they can make critical decisions based on weather patterns, and be confident on the water or in remote areas.

XGate Weather Features

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FREE GRIB File Instructions via Email

Please read Free GRIB File Instructions for complete information on receiving GMN’s Free GRIB weather files via e-mail. Email for information and instructions on how to receive Free GRIB forecasts by email.

If you will be requesting these files by email over a satellite connection, we recommend you use GMN’s XGate Wireless Email Solution. With its compression technology and mid-file restart you will realize significant airtime savings.

GRIB File Weather Forecasting

Need to know more about weather forecasting with GRIB files? Check out Chris Parker’s Coastal and Offshore Weather, the Essential Handbook

If you are unfamiliar with GRIB, read What’s a GRIB a short story on GRIB files.

Detailed Videos Include How to Download GRIBS with Iridium AxcessPoint Mail & Web!

Iridium Axcesspoint as described above only works with Iridium Extreme and Iridium 9555. Users who have other phones (or an Iridium Extreme or Iridium 9555) need to visit Optimizer: Your WiFi Hotspot and Satellite Firewall Solution for a unit that retails for less and has more features than Axcesspoint.

NEW! 3 Minute Audio How to Download Free Grib Files with an iPod App over Iridium Satellite Phones. Click Here to listen now.

Did you know that GRIB file transfers cost pennies (or less) over broadband? Check out our free guide to satellite broadband to learn more.

Download FREE GRIB Files

The following is a list of supported regions. Click on the KEY to download a compressed 7 day wind forecast for the selected region. NOTE: Internet Explorer users will need to right click the appropriate link and select “Save Target As..” to download the file.

To view GRIB files you will need the following:

  • A program to uncompress the GRIB files (they are in bzip2 format).
  • A GRIB viewer – visit our downloads page for GRIB viewer options.

For viewing GRIB files we recommend GRIB Explorer.


[wind][wave] PacificPacific Region Forecast Data (includes Gulf of Alaska data)
[wind][wave] AtlanticWest Atlantic (US) Region Forecast Data
[wind][wave] CanadaEast Canada Region Forecast Data
[wind][wave] CaribbeanCaribbean Basin and Gulf of Mexico Forecast Data
[wind][wave] Drake PassageDrake Passage Region Forecast Data
[wind][wave] East AtlanticEast Atlantic Region Forecast Data
[wind][wave] Great LakesGreat Lakes Region Forecast Data
[wind][wave] Northern EuropeNorthern Europe Region Forecast Data
[wind][wave] ArgentinaArgentina, Chile Region Forecast Data
[wind][wave] South AfricaSouth Africa Region Forecast Data
[wind][wave] New Zealand New Zealand Region Forecast Data
[wind]              Mediterranean Mediterranean Region Forecast Data
[wind][wave] Scandinavia Scandinavian Region Forecast Data
[wind][wave] Barents Barents Region Forecast Data
[wind][wave] Baffin Bay Baffin Bay Forecast Data
[wind][wave] West Alaska West Alaska Region Forecast Data
[wind][wave] Vancouver Vancouver Region Forecast Data
[wind][wave] Central North Pacific Central North Pacific Region Forecast Data
[wind][wave] Central South Pacific Central South Pacific Region Forecast Data
[wind][wave] Central Pacific Central Pacific Region Forecast Data
[wind][wave] West Pacific West Pacific Region Forecast Data
[wind][wave] Chile, Peru Chile, Peru Region Forecast Data
[wind][wave] Central America Central America Region Forecast Data
[wind][wave] South Atlantic South Atlantic Region Forecast Data
[wind][wave] Central Atlantic Central Atlantic Region Forecast Data
[wind][wave] Madagascar Madagascar Region Forecast Data
[wind][wave] Indian Ocean Indian Ocean Forecast Data
[wind][wave] North Indian Ocean North Indian Ocean Forecast Data
[wind][wave] Kergelen Kergelen Region Forecast Data
[wind][wave] South Australia South Australia Region Forecast Data
[wind][wave] Indonesia, Australia Indonesia, Australia Region Forecast Data
[wind][wave] Indonesia, New Zealand Indonesia, New Zealand Region Forecast Data
[wind][wave] North Japan North Japan Region Forecast Data
[wind][wave] Tasman Sea Tasman Sea 30-50S, 140-180E
[wind][wave] Daimler-Chrysler Daimler-Chrysler 60-10N, 75-0W
[wind][wave] CapeTown-Rio CapeTown-Rio 20-30S, 48W-25E
[wind][wave] Sydney-Hobart Sydney-Hobart 2-44S, 146-155E
[wind][wave] Newport-Bermuda Newport-Bermuda 42-32N, 74-64W

NEW! 3 Minute Audio How to Download Free Grib Files with an iPod App over Iridium Satellite Phones. Click Here to listen now.

New! 3 Minute Audio Download
How to Download Free GRIB Files with an iPod App Over Iridium Satellite Phones

Free GRIB File Instructions
Free GRIB Files
WeatherNet FREE Trial

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GMN Full Marine WX Package
WeatherNet Service
GRIB Explorer Software
GRIB Explorer Bathymetry
MetMapper Software
MacWX – WeatherNet for Mac
MacENC – GRIB Viewer for Mac
Coastal and Offshore Weather, the Essential Handbook

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